Verb. To concoct a logical but elaborate or statistically improbable explanation for phenomena that appears supernatural. A reference to Dana Scully, a scientist and FBI agent on the X-Files who regularly rebuffed Agent Mulder’s supernatural explanations. For example in Season 2, Episode 14, Die Hand Die Verletzt (1995) toads rain from the sky and Mulder explains it in terms of Satanism. Agent Scully’s response is: "The National Weather Service says there are tornadoes in Northern Massachusetts. The wind probably picked up the animals into the storm." First known cultural reference is from Buffy the Vampire Slayer, Season 1, Episode 6, "The Pack" First Aired: Monday April 7, 1997. Xander begins acting strange and Giles explains it as simply Xander acting like a normal sixteen-year-old boy:

verb... to attempt to rationalize a seemingingly irrational event or occurence.

origin is from the character Scully of the X-Files

When Bob told Sue of the creepy noises he heard durring the storm last week and how he though his house might be haunted, Sue denounced his theory, telling him it was probly just the wind. Bob responded, "Don't scully me, Sue. This was no wind."